You might see teaching your kid how to ride a bike as a rite of passage, a sacred experience that culminates with the grand moment of you wiping tears as Little Adele or Brady pedals into youthful freedom. That’s great. But you also might look at the task with dread—all you can envision is an aching back for you,…

If you’ve ever had an interest in learning about Buddhism, now is the perfect opportunity. You can take a Harvard University course on the beliefs, practices, and scriptures of Buddhism online for free.

Crossfit’s intense workouts are a polarizing subject of discussion. It seems the first rule of Crossfit club is that you must never shut up about Crossfit club, and on the flip side, the sport (routine? Discipline? Hobby?) has its share of haters. So let’s take a minute to cut through that for anyone who’s intrigued…

I love that there are so many different, independent places to take yoga or dance classes or try out Crossfit. But when you have to check each studio’s schedule, it’s a major pain to answer simple questions like “Can I take a beginner class somewhere on Saturday morning?”

If you’ve been itching to learn photography but aren’t sure where to start, former Stanford professor and Google teacher Marc Levoy has released his entire course, which includes video lectures, slides, and more online for free.

You can never learn enough when you’re practicing design. The Summer of Design 12-week email course from designer David Kadavy, based on his book Design for Hackers, is currently free if you sign up in the next twelve days.

If you’re interested in making music, learning the basics of music production and music theory will serve you well—and this free course from NYU will teach you the ropes, at home, using your own computer and music you already know and love.

Whether you’re the person others always turn to for tech support or you’d like to learn how to really use sites like Facebook, Netflix, Spotify, and YouTube but don’t just want to fumble around, Techboomers is a new service that has well-paced, guided lessons to each of those sites, their best features, and more.…

Littlebits make designing little electronics super easy, but that doesn't mean everyone can make anything instantly. If you'd like a little more guidance, Littlebits and P2Pu teamed up for the Invent Anything online course, and you can sign up for it right now for free.

Every student could use a little extra spending money, and selling your class notes and study materials is one way to make some on the side for something you're doing for free already. Flashnotes lets you sign up by school, post your notes for specific classes, and sell them to other students.

We highlight a number of free online courses in our Lifehacker U series, but this free course from MIT on documentary photography and photojournalism is completely free, open to the public, and will teach you to improve your photography skills, even if you're not trying to catch a scoop.

iOS: Whether you're a teacher or a student, ReMarkable is a tool that can make organizing, collaborating, and grading assignments a little easier. The app makes it easy for teachers to accept assignments from students and organize them, and gives students a way to collaborate on their class assignments.

Humans often act irrationally, making decisions—sometimes important ones—that contradict our best interests. This kind of irrational behavior is at the center of behavioral economics, and this free, online eight-week course by TED speaker, author, and Duke Professor Dan Ariely will introduce you to the topic.

ExamTime is a free web service that gives students and teachers a place to organize mind maps, flashcards, quizzes, reports, class notes, and more. The service was designed for students and educators, and you can use it to store your own notes and class materials, or use it to collaborate with classmates.